<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>问卷设计</title>
    <link rel="stylesheet" href="css/normalize.css">
    <link rel="stylesheet" href="css/style.css">
</head>
<body>
    <ul class="wj-szxx">
        <li>设置顺序</li>
        <li class="zr_pointer"><img src="img/ico_3.png"/></li>
        <li class="zr_pointer"><img src="img/ico_2.png"/></li>
        <li class="zr_pointer"><img src="img/ico_1.png"/></li>
        <li class="zr_pointer"><img src="img/ico_4.png"/></li>
    </ul>
    <div class="wj-szxx">
        <p>12.请选择本地文件上传<span class="zr_red">*</span>（附件题）</p>
        <p class="fj-p">Tips:文件不大于5M;支持JPGE,WORD,EXCEL,RAR,ZIP;</p>
    </div>
</body>
</html>
<script src="js/jquery.min.js" type="text/javascript"></script>
<script>
    $('.wj-szxx li').on('mouseenter',function () {
        var src = $(this).find('img').attr('src').slice(0,-4) + '(1).png';
        $(this).find('img').attr('src', src);
    }).on('mouseleave',function () {
        var src = $(this).find('img').attr('src').slice(0,-7) + '.png';
        $(this).find('img').attr('src', src);
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</script>